What was found
ON CLIMBOUT PASSING 280, "MAIN CARGO DOOR" LIGHT ILLUMINATED. FOLLOWED CHECKLIST, RTB. PASSING APPROX 4,000 FT LIGHT EXTINGUISHED. NO OTHER INDICATIONS WERE PRESENT. T/S PER FIM 52-71 FT 809. FOUND S891 DOOR LATCHED SENSOR READING 6.7. OTHER SENSOR CK OK. ADJUSTED SENSOR S891 TO MREAD 5.8. IAW MM 52-71-09-2, AND MM 32-09-13-5. CYCLED DOOR , INDICATIONS NORMAL.